CHICAGO'S CUSTOM HEADQUARTERS · WHEELS · PERFORMANCE · CAR AUDIO - 12-VOLT · FINANCING AVAILABLE

Zapco ASP-TPA 4-Ch. Tube Preamplifier (6922 Dual) - Installed at Mediocre Customs, Cary IL

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$799.99
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$799.99
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Authorized Dealer
Professional Installation Available

Installed at Mediocre Customs, Cary IL. A processor only sounds as good as its tune. We install it at our Cary shop and tune it in your car, with your speakers.

4-Ch. Tube Preamplifier

Features and Functions

  • 4-Channels Tube Preamplifier
  • Tube Type: 6922 Dual
  • 4-Channels High-Level Input
  • 4-Channels Low-Level RCA Inputs
  • 4-Channels Low-Level RCA Outputs
  • THD+Noise < 0.01%
  • S/N Ratio 110dB

Technical Specifications

Frequency Response 20 Hz ~ 22 KHz
Gain Range 250mV ~ 6V
Input Impedance RCA 22K Ohms / HL 4 Ohms
Output Impedance 600 Ohms
Power Supply 10V ~ 16V DC
Dim. (mm) 128 (W) x 45 (H) x 161 (D)

Professional install at Mediocre Customs

  • Mounting and wiring between your radio and amps
  • Speaker-level or RCA inputs, whatever your vehicle needs
  • Crossovers, EQ and time alignment tuned in the car
  • A walk-through of the controls before you leave

Typical install time: 2–4 hours plus tuning

Vehicles we do this in: Factory radio upgrades, full custom systems and sound quality builds.

Buy online, pick up and install in store. Message us to discuss your build and book your install.

Questions we get in the shop

Can I buy it online and have you install it?

Yes. Order here, pick in-store pickup, and we hold it for your install day. You can also buy it at the counter.

Can I keep my factory radio?

In most vehicles, yes. That's what this is built for when it has speaker-level inputs.

Is tuning included?

We tune what we install. Ask for an install quote when you message us.

Why buy from Mediocre Customs

We're an authorized Zapco dealer, and we install what we sell at our shop in Cary, IL. Everything is priced at MSRP. Order online for in-store pickup, or stop by the counter, and we'll get it installed and tuned right the first time. Questions about your build? Talk to us.

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